![Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The term otosclerosis is derived from the Greek words for “hardening of the ear.” Politzer first recognized otosclerosis in 1893](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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8 otosclerosis
- 1. Otosclerosis Hongyan Jiang MD&PhD Otorhinolaryngology Hospital,The First Affiliated Hospital of Sun Yat-sen University
- 29. Meniere’s Disease Hongyan Jiang MD&PhD Otorhinolaryngology Hospital,The First Affiliated Hospital of Sun Yat-sen University
- 33. Normal membranous labyrinth Dilated membranous labyrinth in Meniere's disease (Hydrops)
- 44. Differential Diagnosis Differential Diagnosis of Vertigo Based on Time Frame of Vertigo and Presence or Absence of Hearing Loss
- 55. Deafness and its rehabilitation Hongyan Jiang MD&PhD Otorhinolaryngology Hospital,The First Affiliated Hospital of Sun Yat-sen University
- 77. -10 0 10 20 30 40 50 60 70 80 90 100 110 120 250 500 750 1000 1500 2000 3000 4000 6000 4 Channel Instrument 16 Channel Instrument Multi-Channel Amplification Error
- 78. -10 0 10 20 30 40 50 60 70 80 90 100 110 120 250 500 750 1000 1500 2000 3000 4000 6000 ChannelFree Interpolates For accuracy ChannelFree TM Precision
- 81. Thanks for your attention!
Notas del editor
- The early phase is characterized by multiple active cell groups including osteocytes, osteoblasts, and histiocytes. It develops a spongy appearance because of vascular dilation secondary to osteocyte resorption of bone surrounding blood vessels. This can be seen grossly as red hue behind the tympanic
- Paracusis of Willis :Patients report improved speech understanding in a noisy environment.
- Carhart’s notch is characteristic of otosclerosis and appears as a sensorineural hearing loss at 2 kHz that is spurious since the bone conduction in the mid-frequency range is not reliable.
- Here are some important comments with regard to these figures: 1. The indicated gain values may be reached in full , because of the Adaptive Feedback Canceller. 2. The low battery consumption allows for a total operating time of, approximately: 77 hours for CIC with battery 10 143 hours for ITC with battery 312 255 hours for ITE with battery 13 3. N ote the wide frequency range effectively covering the frequencies which are important for speech understanding.
- Here are some important comments with regard to these figures: 1. The indicated gain values may be reached in full , because of the Adaptive Feedback Canceller. 2. The low battery consumption allows for a total operating time of, approximately: 77 hours for CIC with battery 10 143 hours for ITC with battery 312 255 hours for ITE with battery 13 3. N ote the wide frequency range effectively covering the frequencies which are important for speech understanding.
- Let’s look at ChannelFree precision in terms of an audiogram… Here we have the measured thresholds, but in reality the audiogram is probably not a straight line, And in red we have the UCL information. If we try to fit this audiogram with a 4 channel instrument, you can see that we have areas of overamplification and areas of underamplification, If we move to 16 channels, we have a better fit, but we introduce even more temporal smearing as we’ll see a bit later
- Symbio XT’s ChannelFree system interpolates the gain where it is needed for accuracy. A little later in the talk I’ll show you how you control the gain where needed during a fitting.